Engine governor



.July 22,' 1930. JONES l,77l,l24

ENGINE GovERNoR Filed Jan. 2, 1.926

V INVENTOR 55 [L: I eogyel. ones. ;az z gm Patented July 22, isso'sTATss PATENT oEFcs EORGE L. JONES, or BBOKLYLL' NEW YORK; Assmnq romesrnnn nnvELor- 7 4 MENT coMrANY, or' novnn, DELAWARE; AeonnonAron onIJ-ELAWARE ENGNE eovnnnon Appficaton'ed January 2, 1926. -Seria1' Ne.78,887.

` This invention relates to engine. governors and more particularly tomeans for controlling the speed of that type ofinternal Coinhustionengine Where` the. fuel to `be injected is maintained constantly under'high ,press sure,` frequently running up to 1800 lbsrper sq. in. andeven higher. The Valve gearing e in such a system comprising the inlet-va1ve and the various leversand other mechansm connected theretoWhereby the 'valve is act-uated to `open and ,closed position andwhereby the degree' of opening of said valve and hence the speed of ;theengine may be con- -trolled mush-therefore, be built substant-ial inorder to Withstand the force necessary to 'operate said gearing againstthe high pressure in the fuel supply system. ;Notonly must the parts heof Vsubstantial Construction but all connections must be fairly rigidsince the adjustment of the valve is relatively fine. Itl will beunderstoodthat' underthese cir eumstances it requires the expenditure ofconsiderable force to operate the ValVe gear and the control thereofbythe ordinary type of (flyball) governor andtheu'sual means of setting itby an operator is, Itherefore, not a Very simple matter. One of thePrincipal ohjects of my invention is to provide a hand adjustment of thegoverning means which Will permit an easy control and fineadjustment ofthesaid'valve gear.

.A further ohject of my' inventon provision of a governing'neans havingthe characteristics described above capable of Operating at adistancefron the said valve gear to permit of renote control of theenginespeedu Still another object-of my inventon is the r provision ofan electric` governing means which Will permit control of the enginespeed When sad engine is Operating forward or reverse. r o v i i Otherobjects and advantages of this1 `}nvention Will become apparentin`thfollowing de ta-ileri description thereof.

In the aceonpanyingdrawings- Fig. 1 is Vertical sectionthrough thecylinder of an internal combuston engine of the type wheren thefuelsupply is constantnechanisnof Fig. 2.

lv nndehigh-pressure, and showing a form Or vali e gearng appliedthereto.

Eig. 2- is an. assenbly, View, partly sectioned and largelydiagramnatic,of a preferred form ofelectric governor embodying my invention. f i 1Fig. 3 is a part of the valve gear -actuating Inechanism adapted to heoperated bythe Referringto the` drawings, Fg. 1 shows a cylinder lO of atype of internal combustion engine in which operates a pston 11 adaptedto compressthe combusthle inixture in a comhustion chanher 12 where itisignited The combustible ininture inby igniterl. cludes fuel 'WhlCll sn eeted through a` Valve 15 under ;high pressure,the fu el. beingconstantly maintained under great pressure wthinthe supply system' 16.For Operating the Valvel there isshown a conventonal' form of Valve"gear which :may` include a lever 17 and a -hnlel hav ng engagenent atits lower end, shown here in the form of aroller 19, With a cam 20 onthe cam shaft 21 operatedfroni the engine.: By this means it Will beobserved that -periodically the link l8is aetuated to open the valve.

The degree of Vah 'e opening'nay be varied by controlling the position.of rollerl) With respect toeani :20. This may he done by soneineanssuch as a: link 23 connected to link 18 andladapted to be operated by abell crank 24,eennected by. seine means, such as a link 25, to asuitable gorerning means.

In this nanner I the governor may actuate roller 19 to the rghtor leftto vary the length of time thatean 20 engages sadroller and ,hence thelen 'th {of time durin which the ValVe 15 is opened and 'fuel injected;h In ths nanner the quantty of fuel n ected and hence the speed oftheengine maybe controlled. i i\ i 4 YVhle heretofore the control means ofan engine conssted of a governor having relai tively 5 little operativeforce l ,have shown `a form of: governor eoinprising nieans capableofexerting a force great enoigh to operate the valve gearf' of enginehaving a` feel snpply constantly underpressure, but which isnevertheless eapable of fine and easy ad fil justnent by hand. For thispurpose I may cmploy a servo-motor 30 for Operating link 2. 3 throughsome connection, such as pinion 31, engaging rack 32 to rock a bellcrank 33 connected its other end to link 25. The hand adjustment of thegovernor may be eil'ected as follows:

I employ a dynamo 35 having a field 36 controlled by the engine speedthrough some connection, such as shaft 37 and gearing 38- 30 while thearmature 40 of said motor is controlled by the hand levcr ll Operatingthrough a rheostat 42 and a motor 43 connected to the armature 4:0, sothat the speed of armature %0 is controlled by handle ll which may beactuated by an operator, at a remote point it desired. The speed ot'armature tO, theretore, represents the desired speed while the speed ot'field 36 represents the actual engine speed. iVhen the speeds of thesaid field 36 and armature 4:0 are the same, the actual 'speed is thedesired speed and switch controlling the motor 30 is open and motor 30is not Operating to ati'ect the valve gearing. The switch 50 may be ofan ordinary type adapted to be actuated by the flow of currenttherethrough to close the circuit through the motor 30. Said switch 50may comprise an electro-magnet adapted to attract or repel an armature61 normally centralized by means such as springs 762, according as thecurrent passes therethrough in one direction or the other to close anupper set of Contacts 63 or a lower set 64: to energize the motor 30 inone direction or the other. When it is desired to change the speed ofthe engine, handle 41 is operated to cause armature 40 to increase ordecrease its speed as desired, so that the speed of said armature isdifferent from the speed of the field 36, which condition will cause aflow of current through switch 50 to close the circuit through motor 30in one direction or the other to cause said motor to actuate the valregearing in the proper direction to increase or decrease the length oftime 'of opening of valve 15, andthus increase or decrease the speed ofthe engine as desired. Vhen the proper engine speed is obtained, thespeed of field 36 will again be the same as the speed of armature 40 andno current will be generated through switch 50 so that the circuitthrough motor 30 will be broken.

The governing means described above is effective for reverse running otthe engine as well as for forward running thereof, tor When field 36isreversed in direction, due to reverse running of the engine, thearmature 40 may also be reversed by means such as a switch 49. v

Brake means 60 may beemployed in connection with the motor 30 to bringthe latter quickly to a stop. Preferably the breke is of theelectromagnet type in circuit with motor 30 so that when the circuitthrough the motor is closed, thebrake is rendered inefi'ective,`but

becomes effective as soon as the circuit through said motor is broken.

Should the electric governing system fail for any reason, I may providea solenoid 52 adapted to drop its core 53 whenever the electricgoverning circuit fails and thus open the nlet Valves ot' the tuel pumpto stop the engine.

In accordance with the provisions of the patent statuates, I have heroindescribed the principle and operation of my invention, together with theapparatus which I now consider to represent the best cmbodiment thereof,but I desire to have it understood that the apparatus shown is onlyillustrative and that the invention can be carried out by other means.Also, while it is designed to use the various features and elements inthe combination and relations described, some of these may be alteredand others omitted without intertering With the more general resultsoutlined, and the invention extends to such use.

Having described my invention, what I claim and desire to secure byLetters Patent is:

l. A governing mechanism for the valve Operating gear of an internalcombustion cngine having a fuel supply constantly under pressure, saidmechanism including an electrically operated governing means therefor,including a dynamo having a rotatable field member and a rotatablearmature member, means including a hand-0perated rheostat and a motorcontrolled thereby for controlling the speed of one of said members,means Whereby the engine Controls the speed of the other of saidmembers, and means tor governing said gear, said last named meansincluding a switch controlled by the ditl erential speedsof said membersand a servo-motor connected to said gear and controlled by said switch.

2. A governing mechanism 'tor the valve gear of an internal combustionengine h aving a fuel supply constantly under prcssure and a fuel pumpfor maintaining said pressure, said mechanism including an electriccircuit and means tor rendering said pump ineliective when said circuitfails.

3. izi overning mechanism for the valve gear of an internal combustionengine having a fuel supply constantly under pressure and a fuel pumptor maintaining said pressure, said mechanism including an electricallyoperated means for said gear, and means tor rendering said pumpinefiective when the electric circuit of said electrically operatedmeans fails. i

In testimony whereof I have afiixed my signature.

GEORGE L. JONES.

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